All right. So, problem 31 here, forgiven to bases and asked to named the ways and also figure out a foot scene in DNA or RNA or both. So the way we go about this is to just look at the, um, different function groups or different atoms that are connected to our kind of ah, main ring. Right? So started would part ay here. We see that, um, we got this group sticking out of our ring and everything else would just be hydrogen is right. The white spheres, some represent heart surgeons. So this is an N H two group. So whenever you only have n h two and nothing else, um, connected to the ring you got on adding right and also added, Dean would have this two rings connected to each other. That's also characteristic of both adenine and guanine, actually, So this n h do tells us it's ad Deen. So where do you see adding induce e it and DNA or RNA or both? And we know that the only difference between DNA and ornate is the you're selling timing so adenosine would be found in, but Okay, Okay. So, Part B, I'll be right here. We see that we got too hard A gin or sorry to oxygen. Adam's connected to our ring. So whenever you see to oxygen, um, Adam's connected as such immediately. We think either way I mean or yourself. Okay, so those are the only basis in the way or Arnie, that has that kind of structure. Hey, So what tells us whether it's you or you as whether we have this methanol group right here? So this is stage three. Okay, So if you have that ch three, that means you have a timing. So this the structure right here is a timing if you don't have that ch three than you have a years old. So where do you see I'm initiate your name, our name or both. And we know that I mean, could be found in DNA on Lee uni on Lee. Because in Orinda, we have yourself and not sight means. Okay, two, Those are our answers for this one.